03 Aug, 2010
1 commit
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After tightening up the types passed to set_64bit(), the cast to
(phys_t *) triggers a warning apparently because phys_t is defined as
"unsigned long" when building on 64 bits; however, u64 is defined as
"unsigned long long". This is, however, a explicit cast inside a
size-specific call, so just make the cast explicitly (u64 *).Signed-off-by: H. Peter Anvin
Cc: Jeff Dike
LKML-Reference:
02 Aug, 2010
2 commits
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Use a direct per-cpu reference for the GDT instead of using a scratch
register.Signed-off-by: Brian Gerst
LKML-Reference:
Signed-off-by: H. Peter Anvin -
Use a direct per-cpu reference for the IST instead of using a scratch
register.Signed-off-by: Brian Gerst
LKML-Reference:
Signed-off-by: H. Peter Anvin
29 Jul, 2010
3 commits
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We have two functions for doing exactly the same thing -- emulating
cmpxchg8b on 486 and older hardware -- with different calling
conventions, and yet doing the same thing. Drop the C version and use
the assembly version, via alternatives, for both the local and
non-local versions of cmpxchg8b.Signed-off-by: H. Peter Anvin
LKML-Reference: -
Move cmpxchg emulation code from arch/x86/kernel/cpu (which is
otherwise CPU identification) to arch/x86/lib, where other emulation
code lives already.Signed-off-by: H. Peter Anvin
LKML-Reference: -
Remove the __xg() hack to create a memory barrier near xchg and
cmpxchg; it has been there since 1.3.11 but should not be necessary
with "asm volatile" and a "memory" clobber, neither of which were
there in the original implementation.However, we *should* make this a volatile reference.
Signed-off-by: H. Peter Anvin
LKML-Reference:
28 Jul, 2010
12 commits
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Clean up and simplify set_64bit(). This code is quite old (1.3.11)
and contains a fair bit of auxilliary machinery that current versions
of gcc handle just fine automatically. Worse, the auxilliary
machinery can actually cause an unnecessary spill to memory.Furthermore, the loading of the old value inside the loop in the
32-bit case is unnecessary: if the value doesn't match, the CMPXCHG8B
instruction will already have loaded the "new previous" value for us.Clean up the comment, too, and remove page references to obsolete
versions of the Intel SDM.Signed-off-by: H. Peter Anvin
LKML-Reference: -
xchg() and cmpxchg() modify their memory operands, not merely read
them. For some versions of gcc the "memory" clobber has apparently
dealt with the situation, but not for all.Originally-by: Linus Torvalds
Signed-off-by: H. Peter Anvin
Cc: Glauber Costa
Cc: Avi Kivity
Cc: Peter Palfrader
Cc: Greg KH
Cc: Alan Cox
Cc: Zachary Amsden
Cc: Marcelo Tosatti
Cc:
LKML-Reference: -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
9p: Pass the correct end of buffer to p9stat_read -
When freeing a gpio that has not been exported, gpio_unexport() prints a
debug message when it should just fall through silently.Example spurious message:
gpio_unexport: gpio0 status -22
Signed-off-by: Jon Povey
Cc: David Brownell
Acked-by: Uwe Kleine-K?nig
Cc: Gregory Bean
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The MPC85xx EDAC driver is missing module device aliases, so the driver
won't load automatically on boot. This patch fixes the issue by adding
proper MODULE_DEVICE_TABLE() macros.Signed-off-by: Anton Vorontsov
Cc: Doug Thompson
Cc: Peter Tyser
Cc: Dave Jiang
Cc: Kumar Gala
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the logic while writing new date/time to the chip. The driver
incorrectly wrote back register values to different registers and even
with wrong mask. The patch adds clearing of the VLF register, which
should be cleared if all date/time values are set.Signed-off-by: Rudolf Marek
Acked-by: Wan ZongShun
Cc: Martyn Welch
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The command
echo "file ec.c +p" >/sys/kernel/debug/dynamic_debug/control
causes an oops.
Move the call to ddebug_remove_module() down into free_module(). In this
way it should be called from all error paths. Currently, we are missing
the remove if the module init routine fails.Signed-off-by: Jason Baron
Reported-by: Thomas Renninger
Tested-by: Thomas Renninger
Cc: [2.6.32+]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Pass the correct end of the buffer to p9stat_read.
Signed-off-by: Latchesar Ionkov
Signed-off-by: Eric Van Hensbergen -
* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/perf:
perf, powerpc: Use perf_sample_data_init() for the FSL code -
* git://git.infradead.org/users/cbou/battery-2.6.35:
ds2782_battery: Rename get_current to fix build failure / name conflict -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
s2io: fixing DBG_PRINT() macro
ath9k: fix dma direction for map/unmap in ath_rx_tasklet
net: dev_forward_skb should call nf_reset
net sched: fix race in mirred device removal
tun: avoid BUG, dump packet on GSO errors
bonding: set device in RLB ARP packet handler
wimax/i2400m: Add PID & VID for Intel WiMAX 6250
ipv6: Don't add routes to ipv6 disabled interfaces.
net: Fix skb_copy_expand() handling of ->csum_start
net: Fix corruption of skb csum field in pskb_expand_head() of net/core/skbuff.c
macvtap: Limit packet queue length
ixgbe/igb: catch invalid VF settings
bnx2x: Advance a module version
bnx2x: Protect statistics ramrod and sequence number
bnx2x: Protect a SM state change
wireless: use netif_rx_ni in ieee80211_send_layer2_update
27 Jul, 2010
22 commits
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We should use perf_sample_data_init() to initialize struct
perf_sample_data. As explained in the description of commit dc1d628a
("perf: Provide generic perf_sample_data initialization"), it is
possible for userspace to get the kernel to dereference data.raw,
so if it is not initialized, that means that unprivileged userspace
can possibly oops the kernel. Using perf_sample_data_init makes sure
it gets initialized to NULL.This conversion should have been included in commit dc1d628a, but it
got missed.Signed-off-by: Peter Zijlstra
Acked-by: Kumar Gala
Signed-off-by: Paul Mackerras -
…git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Do not try to disable hpet if it hasn't been initialized before
x86, i8259: Only register sysdev if we have a real 8259 PIC -
Patch 9e39f7c5b311a306977c5471f9e2ce4c456aa038 changed the
DBG_PRINT() macro and the if clause was wrongly changed. It means
that currently all the DBG_PRINT are being printed, flooding the
kernel log buffer with things like:s2io: eth6: Next block at: c0000000b9c90000
s2io: eth6: In Neterion Tx routineSigned-off-by: Breno Leitao
Acked-by: Sreenivasa Honnur
Signed-off-by: David S. Miller -
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] powernow-k8: Limit Pstate transition latency check
[CPUFREQ] Fix PCC driver error path
[CPUFREQ] fix double freeing in error path of pcc-cpufreq
[CPUFREQ] pcc driver should check for pcch method before calling _OSC
[CPUFREQ] fix memory leak in cpufreq_add_dev
[CPUFREQ] revert "[CPUFREQ] remove rwsem lock from CPUFREQ_GOV_STOP call (second call site)" -
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus:
MIPS: Set io_map_base for several PCI bridges lacking it
MIPS: Alchemy: Define eth platform devices in the correct order
MIPS: BCM63xx: Prevent second enet registration on BCM6338
MIPS: Quit using undefined behavior of ADDU in 64-bit atomic operations.
MIPS: N32: Define getdents64.
MIPS: MTX-1: Fix PCI on the MeshCube and related boards
MIPS: Make init_vdso a subsys_initcall.
MIPS: "Fix" useless 'init_vdso successfully' message.
MIPS: PowerTV: Move register setup to before reading registers.
SOUND: Au1000: Fix section mismatch
VIDEO: Au1100fb: Fix section mismatch
VIDEO: PMAGB-B: Fix section mismatch
VIDEO: PMAG-BA: Fix section mismatch
NET: declance: Fix section mismatches
VIDEO. gbefb: Fix section mismatches. -
Fix error from the last pull request. Making sure we shut the panel off
is more correct and saves power.Signed-off-by: Jesse Barnes
Signed-off-by: Linus Torvalds -
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
sysfs: allow creating symlinks from untagged to tagged directories
sysfs: sysfs_delete_link handle symlinks from untagged to tagged directories.
sysfs: Don't allow the creation of symlinks we can't remove -
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: musb: tusb6010: fix compile error with n8x0_defconfig
USB: FTDI: Add support for the RT System VX-7 radio programming cable
USB: add quirk for Broadcom BT dongle
USB: usb-storage: fix initializations of urb fields
USB: xhci: Set Mult field in endpoint context correctly.
USB: sisusbvga: Fix for USB 3.0
USB: adds Artisman USB dongle to list of quirky devices
USB: xhci: Set EP0 dequeue ptr after reset of configured device.
USB: Fix USB3.0 Port Speed Downgrade after port reset
USB: xHCI: Fix another bug in link TRB activation change.
USB: option: Add support for AMOI Skypephone S2
USB: New PIDs for Qualcomm gobi 2000 (qcserial)
USB: ftdi_sio: support for Signalyzer tools based on FTDI chips
USB: s3c2410_udc: be aware of connected gadget driver
USB: Expose vendor-specific ACM channel on Nokia 5230
USB: Add PID for Sierra 250U to drivers/usb/serial/sierra.c
USB: option: add support for 1da5:4518 -
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
serial: fix rs485 for atmel_serial on avr32 -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel:
drm/i915: add pipe A force quirks to i915 driver
drm/i915: Fix panel fitting regression since 734b4157
drm/i915: fix deadlock in fb teardown
drm/i915: don't free non-existent compressed llb on ILK+
agp/intel: Use the correct mask to detect i830 aperture size.
drm/i915: disable FBC when more than one pipe is active
drm/i915: Use the correct scanout alignment for fbcon.
drm/i915: make sure eDP panel is turned on
drm/i915: add PANEL_UNLOCK_REGS definition
drm/i915: Make G4X-style PLL search more permissive
drm/i915: Clear any existing dither mode prior to enabling spatial dithering
drm/i915: handle shared framebuffers when flipping
drm/i915: Explosion following OOM in do_execbuffer.
gpu/drm/i915: Add a blacklist to omit modeset on LID open -
The Pstate transition latency check was added for broken F10h BIOSen
which wrongly contain a value of 0 for transition and bus master
latency. Fam11h and later, however, (will) have similar transition
latency so extend that behavior for them too.Signed-off-by: Borislav Petkov
Signed-off-by: Dave Jones -
The PCC cpufreq driver unmaps the mailbox address range if any CPUs fail to
initialise, but doesn't do anything to remove the registered CPUs from the
cpufreq core resulting in failures further down the line. We're better off
simply returning a failure - the cpufreq core will unregister us cleanly if
we end up with no successfully registered CPUs. Tidy up the failure path
and also add a sanity check to ensure that the firmware gives us a realistic
frequency - the core deals badly with that being set to 0.Signed-off-by: Matthew Garrett
Cc: Naga Chumbalkar
Signed-off-by: Dave Jones -
Prevent double freeing on error path.
Signed-off-by: Daniel J Blueman
Signed-off-by: Dave Jones -
The pcc specification documents an _OSC method that's incompatible with the
one defined as part of the ACPI spec. This shouldn't be a problem as both
are supposed to be guarded with a UUID. Unfortunately approximately nobody
(including HP, who wrote this spec) properly check the UUID on entry to the
_OSC call. Right now this could result in surprising behaviour if the pcc
driver performs an _OSC call on a machine that doesn't implement the pcc
specification. Check whether the PCCH method exists first in order to reduce
this probability.Signed-off-by: Matthew Garrett
Cc: Naga Chumbalkar
Signed-off-by: Dave Jones -
We didn't free policy->related_cpus in error path err_unlock_policy.
This is catched by following kmemleak report:unreferenced object 0xffff88022a0b96d0 (size 512):
comm "modprobe", pid 886, jiffies 4294689177 (age 780.694s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[] create_object+0x186/0x281
[] kmemleak_alloc+0x60/0xa7
[] kmem_cache_alloc_node_notrace+0x120/0x142
[] alloc_cpumask_var_node+0x2c/0xd7
[] alloc_cpumask_var+0x11/0x13
[] zalloc_cpumask_var+0xf/0x11
[] cpufreq_add_dev+0x11f/0x547
[] sysdev_driver_register+0xc2/0x11d
[] cpufreq_register_driver+0xcb/0x1b8
[] 0xffffffffa032e040
[] do_one_initcall+0x5e/0x15c
[] sys_init_module+0xa6/0x1e6
[] system_call_fastpath+0x16/0x1b
[] 0xffffffffffffffffSigned-off-by: Xiaotian Feng
Cc: Thomas Renninger
Cc: Prarit Bhargava
Signed-off-by: Dave Jones -
395913d0b1db37092ea3d9d69b832183b1dd84c5 ("[CPUFREQ] remove rwsem lock
from CPUFREQ_GOV_STOP call (second call site)") is not needed, because
there is no rwsem lock in cpufreq_ondemand and cpufreq_conservative
anymore. Lock should not be released until the work done.Addresses https://bugzilla.kernel.org/show_bug.cgi?id=1594
Signed-off-by: Andrej Gelenberg
Cc: Mathieu Desnoyers
Cc: Venkatesh Pallipadi
Signed-off-by: Andrew Morton
Acked-by: Mathieu Desnoyers
Signed-off-by: Dave Jones -
Supporting symlinks from untagged to tagged directories is reasonable,
and needed to support CONFIG_SYSFS_DEPRECATED. So don't fail a prior
allowing that case to work.Signed-off-by: Eric W. Biederman
Signed-off-by: Greg Kroah-Hartman -
This happens for network devices when SYSFS_DEPRECATED is enabled.
Signed-off-by: Eric W. Biederman
Signed-off-by: Greg Kroah-Hartman -
Recently my tagged sysfs support revealed a flaw in the device core
that a few rare drivers are running into such that we don't always put
network devices in a class subdirectory named net/.Since we are not creating the class directory the network devices wind
up in a non-tagged directory, but the symlinks to the network devices
from /sys/class/net are in a tagged directory. All of which works
until we go to remove or rename the symlink. When we remove or rename
a symlink we look in the namespace of the target of the symlink.
Since the target of the symlink is in a non-tagged sysfs directory we
don't have a namespace to look in, and we fail to remove the symlink.Detect this problem up front and simply don't create symlinks we won't
be able to remove later. This prevents symlink leakage and fails in
a much clearer and more understandable way.Signed-off-by: Eric W. Biederman
Cc: Andrew Morton
Cc: Rafael J. Wysocki
Cc: Maciej W. Rozycki
Cc: Kay Sievers
Cc: Johannes Berg
Signed-off-by: Greg Kroah-Hartman -
Drop the unnecessary empty stubs in tusb6010.c and avoid
a compile error when building kernel for n8x0.Signed-off-by: Felipe Balbi
Cc: stable
Signed-off-by: Greg Kroah-Hartman -
RT Systems has put out bunch of ham radio cables based on the FT232RL
chip. Each cable type has a unique PID, this adds one for the Yaesu VX-7
radios.Signed-off-by: Corey Minyard
Cc: stable
Signed-off-by: Greg Kroah-Hartman
